Puivip-valve



(No Model.)

T. P. LEMASSENA.

PUMP VALVE.

No. 289,668. 'Patented Deu. 4.1883.

N. PETERS. Phorolnbegrapmr, wmingwn. n.8.

UNITED STATES PATENT OFFICE.

THEO'DORE F. LEMASSENA, OE NEVARK, NEV JERSEY.

PUMP-VALVE.

SPECIFICATION forming part of Letters Patent No. 289,658, dated December4, 1883.

Application filed December 16, 1882.

To all whom, it may concern:

Be it known that I, T. F. LEMAssENA, acitzen of the United States,residing in the city of Newark, county of Essex, and State of NewJersey, have invented certain new and useful Improvements in Pump-Valves, fully described and represented in the following specicationand the accompanying drawings, forming a part of the same. l

This invention consists in a special construction for the lower end of abarrel-pump and the removable valve applied thereto.

The object of the invention is to provide a valve that may be removedwithout the use of tools and without detaching the seat from thebarrel;. and the object is secured by making the valve of a circularpiece of leather or india-rubber and securing` it to the seat by aremovable bridge clamped across the middle of the valve, the bridgebeing held in place by a central bolt and cross-bar beneath the seat.The opposite segments of the valve thus forni separate ilaps hinged tothe bridge, and the whole valve may be readily removed after nnclampingthe bridge from the seat by folding the aps together and withdrawingthem endwise through the aperture inthe seat.

In the drawings, Figure lis a section of the lower end of thepump-barrel, taken on line x x in Fig. 2. Fig. 2 is a plan of the top ofthe valve and seat; Fig.'3, a bottom view of the same with the valvecollapsed for insertion; Fig. 4, an alternative form for the bridge E,and Fig. 5 a bottom view of the valve and seat.

The valve consists of the circular iiange, of leather, rubber, or othersuitable material, which may be supported under pressure of the watercolumn by plates P P, such as are shown riveted to the movablevalve-flaps in Figs. 2 and 5. Such plates are not necessary in valvesunder two inches in diameter, as the support afforded by the bridge andthe edges of the valve-seat is sufcient to resist the head of watercommonly applied to such pumps.

In the drawings, A is the barrel of an ordinary bilge or drainage pumpbroken off just above the seat. B is the seat usually soldered therein,and providedwithfeet B. C C is the double flap-valve5 D, abridgeextended across (No model.)

the upper surface of the same, and long enough to reach over the seat,so that its ends press the valve-piece thereon when the bridge,` isclamped. E is a lower bridge reaching in a similar manner across thelower side of ythe seat, and F is a bolt passed through C, D, and E toclamp theml all together, the, Aseat Breceiving the pressure. The boltis shown in Fig. 3 provided with a nut upon the upper side of the bridgeD, but in Fig. lis shown secured therein by casting, and a thumb-nut,E', is shown secured upon the lower end, so that the bolt may be readilyreleased to withdraw the valve.,

In Fig. 1 a wedge or key is shown inserted in a slot in the bolt beneaththe bridgel E, which construction is suitable for very large valves. InFig. 1 the valve is shown clamped to the bridge D by an auxiliary plate,H, the latter being inserted` between the opposite edges of the seat Cand heldin place by a nut, H. In the same figure the bridge D is shownprovided with a steady-pin, G, at each end, extended through the valve CC into holes formed in the seat B at the opposite ends of the bridge.operator in placing the valve and bridge in the center of the seat wheninserted through the aperture indicated at Bl in Fig. 3, and the pinsmay be cast upon the bridge and holes formed in the rubber flange toadmit them.

rIhe function of the plate H isto sustain the middle of the rubber orleather ange of which the valve is formed, its edges being sustained bythe seat B under the`pressure of the rIhese pins serve to guide thewater but it also serves to unite the valve C and bridge D togetherduring their insertion into the aperture B2 and their adjustmentupon'the seat B. Such union, however, may be sufficiently secured by thepins G, and in such case the lower bridge, E, may be made, as

shown in Fig. 4, .with a portion adapted to it between the edges of theseat B, like the plate H, and thus support the valve-flange when inaction.

From the above description it will be seen that the entire structure isformed Without tapping any holes in the seat B or making any attachmentsthereto for securing the valve, the latter being heldin place bythesimple IOO bridges and bolt F, and being easily removed or replacedby an unskilled workman without any tools or special skill.

By my construction the seat-castings are merely galvanized to preventrusting, and are then ready to solder into the barrel A without anymachine-work being required to prepare them at all.

I am aware that an expanding piston has been patented on October 18,1881, with avalve constructionA analogous to mine; but my invention isdesigned and adapted to secure a convenient removal of the valve fromthe interior of an almost inaccessible valve-seat, while the object ofthe said piston construetion was to furnish a means of compressing anelastic ring to fit a cylinder-bore, and was y constructed for thispurpose with circular metallic plates on both sides of such ring,instead of the straight bridgesI employ. I therefore disclaim the saidpatent, my invention including the barrel A and fixed seat B as part ofits essential features.

. set forth.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses. v

T. F. LEMASSENA.

litnessesz Tiros. S. CRANE, HENRY F. GoKnN.

